C#中读写INI文件

　　c#的类没有直接提供对ini文件的操作支持，可以自己包装win api的WritePrivateProfileString和GetPrivateProfileString函数实现。下面提供一个包装类，可以直接使用。
 1 using System;
 2 using System.Collections.Generic;
 3 using System.IO;
 4 using System.Linq;
 5 using System.Runtime.InteropServices;
 6 using System.Text;
 7 using System.Threading.Tasks;
 8 
 9 namespace ESIMRobotSystem
10 {
11     class Robot_WriteAndReadInitCls
12     {
13         public string inipath;
14         /// <summary>
15         /// 申明INI文件的写操作函数
16         /// </summary>
17         /// <param name="section">INI文件中的段落</param>
18         /// <param name="key">INI文件中的关键字</param>
19         /// <param name="val">INI文件中关键字的数值</param>
20         /// <param name="filePath">INI文件的完整的路径和名称</param>
21         /// <returns></returns>
22         [DllImport("kernel32")]
23         private static extern long WritePrivateProfileString(
24             string section, 
25             string key,
26             string val, 
27             string filePath
28         );
29 
30         /// <summary>
31         /// 申明INI文件的读操作函数
32         /// </summary>
33         /// <param name="section">INI文件中的段落名称</param>
34         /// <param name="key">INI文件中的关键字</param>
35         /// <param name="def">无法读取时候时候的缺省数值</param>
36         /// <param name="retVal">读取数值</param>
37         /// <param name="size">数值的大小</param>
38         /// <param name="filePath">INI文件的完整路径和名称</param>
39         /// <returns></returns>
40         [DllImport("kernel32")]
41         private static extern int GetPrivateProfileString(
42             string section, 
43             string key, 
44             string def, 
45             StringBuilder retVal, 
46             int size, 
47             string filePath
48         );
49 
50 
51         /// <summary> 
52         /// 构造方法 
53         /// </summary> 
54         /// <param name="INIPath">文件路径</param> 
55         public Robot_WriteAndReadInitCls(string INIPath)
56         {
57             inipath = INIPath;
58         }
59 
60 
61         /// <summary> 
62         /// 写入INI文件 
63         /// </summary> 
64         /// <param name="Section">项目名称(如 [TypeName] )</param> 
65         /// <param name="Key">键</param> 
66         /// <param name="Value">值</param> 
67         public void IniWriteValue(string Section, string Key, string Value)
68         {
69             WritePrivateProfileString(Section, Key, Value, this.inipath);
70         }
71 
72 
73         /// <summary> 
74         /// 读出INI文件 
75         /// </summary> 
76         /// <param name="Section">项目名称(如 [TypeName] )</param> 
77         /// <param name="Key">键</param> 
78         public string IniReadValue(string Section, string Key)
79         {
80             StringBuilder temp = new StringBuilder(500);
81             int i = GetPrivateProfileString(Section, Key, "", temp, 500, this.inipath);
82             return temp.ToString();
83         }
84 
85 
86         /// <summary> 
87         /// 验证文件是否存在 
88         /// </summary> 
89         /// <returns>布尔值</returns> 
90         public bool ExistINIFile()
91         {
92             return File.Exists(inipath);
93         }
94     }
95 }